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Okay, not much Retro, but I know there are some very astute people on here so I'm asking a few questions. It is a 2002 bike, 36K and up until yesterday when the battery died was running fine (its not mine but my boy's....). We changed the battery and started it, all hunky dory. Come this morning, he sets off to work and within a mile it just died. I pulled the tank off and rigged an emergency supply, checked the spark (now luverly) but it has refused steadfastly to work. Trying easy-start got an almighty backfire through the exhaust but nowt else. Carb seems to be OK, I'm now at a loss. HELP, anyone?  ? |
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Rover Metro - The TARDIS - brake problems.....Stored
Rover 75 - Barge
MGZTT Cdti 160+ - Winter Hack and Audi botherer...
MGF - The Golden Shot...Stored
Project Minion........
Can you see the theme?
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will
Posted a lot
Posts: 4,023
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Got spark, got fuel, hows compression? These badboys like rebuilding often and at 36k it's doing well for a race bred smoker. Need to sign up but try here too retrobikes.proboards.com/index.cgi |
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dungbug
Posted a lot
'Ooligan!
Posts: 2,852
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Compression check it I'd say.
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Past: 13 VW Beetles from 1967 - 1974
Bay Window Campers (1973 & 1974)
Mini's (1992 Cooper lookalike & 1984 '25 Anniversary)
MK2 Polo Coupe S (1984 & 1986)
MK2 Polo Breadvan (1981 & 1984)
MK4 Escort (1989)
MK2 Granada Based Hearse (seriously)
Fiat Uno 60S (1986) Punto 60S (1998) Cinq (1997)
1998 Yamaha YZF600R Thundercat
2003 Ford KA
Current: 2004 Ford Focus (barely alive)
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crazymonkey
Posted a lot
ummm....what was I doing again???
Posts: 1,981
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possible rings gone. compression check is definitely the way forward. if carb and spark are fine then its probably a top end fault. they are known for munching through pistons
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whoever said dogs were man's best friend....obviously never heard of cable ties
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Cheers lads, I was thinking aling those lines but then found the RAVE valve was AWOL from the control cable...... hmmmmm...
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Rover Metro - The TARDIS - brake problems.....Stored
Rover 75 - Barge
MGZTT Cdti 160+ - Winter Hack and Audi botherer...
MGF - The Golden Shot...Stored
Project Minion........
Can you see the theme?
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Has it had mains and seals lately?
These used to be reknown for doing them once the rider passed their test - first trip down the motorway and they get hot enough to melt the cages in the bearings. Picked up a few from the hard shoulder..... Oddly enough given good quality oil and proper warming up before being ragged silly other than the bearings they last surprisingly well.
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Apr 12, 2012 21:39:31 GMT
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Cheers for the advice lads, I found the reason today; 10mm of the top of the piston has gone AWOL (which is probably why the plug gap was so small!) and taken the bore with it. Oh well, at least I'm not paying £200 for a new piston and barrel! (I've just gotta fit it!)
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Rover Metro - The TARDIS - brake problems.....Stored
Rover 75 - Barge
MGZTT Cdti 160+ - Winter Hack and Audi botherer...
MGF - The Golden Shot...Stored
Project Minion........
Can you see the theme?
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Apr 12, 2012 23:26:23 GMT
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While its apart check for any alloy remains under the crank, chances are it exitted via the exhaust port but you wouldn't want any stray bits floating about when you fire it up again. Thats a wierd way to fail though - had it been eaten away by pre-ignition?
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Friend of mine had one. The reed valve started to fail, the top end temperatures got very high quickly as he was opening it up more to get the same speed.
Sorry to hear it was somewhat catastrophic...
--Phil
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